Pyroxylin compound.



UNITED STATES PATENT OFFICE.

ERNST ZUI-IL, OF BERLIN, GERMANY.

PYROXYLIN COMPOUND.

SPECIFICATION forming part of Letters Patent No. 700,884, dated May 27, 1902.

Application filed November 17, 1900. Serial ITO-36,860, (No specimens.)

T (ZZZ whom, it 71mg concern:

Beit known that I, ERNST ZiiHL, doctor of philosophy,a subject of the German Emperor, residing at 95 Belle-Alliancestrasse, Berlin, in the Empire of Germany, have invented a new and useful Pyroxylin or Nitrocellulose Examples.

1. Pyroxylin or nitrocellulose, two kilograms; diphenylcarbonate, one kilogram.

2. Pyroxylin or nitrocellulose, two kilograms; tricresylcarbonate, one kilogram.

3. Pyroxylin or nitrocellulose, two kilograms; trinaphthylcarbonate, one kilogram. The proportions in which both ingredients are contained in the composition may be va-- ried and depend on the propertynvhich would be obtained in the finished product.

The properties of the new composition are similar to those of the known pyroxylin or nitrocellulose composition containing camphor; but the new composition is odorless and less combustible.

What I claim is- A new pyroxylin or nitrocellulose compo* sition containing pyroxylin or nitrocellulose with a compound ester of carbonic acid and monooxygenated hydrocarbon of the aromatic series (of the group including diphenylcarbonate, tricresylcarbonate, and trinaphthylcarbonate.)

Signed this 2d day of November, 1900,at

Berlin.

ERNST ZUHL. WVitnesses:

WOLDEMAR HAUPT, HENRY HASPER. 

